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Polymer compositions with PBSA plasticizer

a technology of polymer compositions and plasticizers, applied in the field of polymer compositions, can solve the problems of plasticizers being problematic, affecting the health of workers, and affecting the quality of polymer compositions,

Active Publication Date: 2019-10-29
DANIMER IPCO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The PBSA plasticizer effectively reduces migration and blooming, maintaining polymer flexibility and structural integrity during recycling, enhancing the recyclability and safety of PVC, PLA, and PHA compositions.

Problems solved by technology

By themselves, however, PLA and PHAs tend to be a rather rigid and brittle polymer.
Such plasticizers are problematic in certain aspects.
First, such plasticizers tend to migrate to the surface of the polymer and bloom, where exposure to the polymer may present a health risk.
In addition, for applications where flexible PVC is to be recycled, the polymeric material can only be reground 2 or 3 times before the plasticizer is broken down enough to lose its properties.

Method used

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  • Polymer compositions with PBSA plasticizer
  • Polymer compositions with PBSA plasticizer

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0046]A 5 gallon reactor equipped with a heat exchanger was charged with 1,4-butanediol (21 pounds), succinic acid (11.01 pounds), and adipic acid (20.43 pounds) and heated to 180° C. for 18 hours. During the first 4 hours, the vacuum was ramped down to 300 torr, after which it was gradually reduced to 1 torr. Water was collected in the receiver. When the acid number of the pre-polymer was ≤30, 45 grams of zirconium catalyst was added. The reaction was continued at 205° C. and 1 torr vacuum until the desired viscosity was achieved. Poly(butylene succinate) (2.1 pounds) was added to the reactor and stirred under nitrogen at 205° C. for 2 hours. The product was collected as a slightly translucent, white solid.

example 2

[0047]The process in Example 1 was repeated using titanium isopropoxide as the catalyst.

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Abstract

A polymeric composition is disclosed which includes from about 40 to about 99 weight percent of a first polymer and from about 1 to about 60 weight percent of polybutylene(succinate-co-adipate) (“PBSA”). Preferably the first polymer is selected from the group consisting of polyvinyl chloride, polylactic acid, polyhydroxy alkanoates, and mixtures thereof. A method for making the composition is also disclosed.

Description

FIELD[0001]This disclosure relates to polymeric compositions. More particularly, this disclosure relates to polymeric compositions incorporating a polybutylene succinate plasticizer.BACKGROUND[0002]Polyvinyl chloride (“PVC”) is a polymer that is commonly used in fields such as construction and commodity packaging. There are two forms of PVC, rigid and flexible. PVC is naturally a rigid polymer, but by adding plasticizer, or combinations of plasticizers, it may advantageously be made more flexible.[0003]Polylactic acid (“PLA”) and polyhydroxy alkanoates (“PHAs”) are additional polymers which are of increasing commercial importance. Advantageously, PLA and PHAs may be derived from renewable biomass resources, rather than from fossil fuels. Moreover, PLA and PHA products are biodegradable. By themselves, however, PLA and PHAs tend to be a rather rigid and brittle polymer. Consequently, it is also advantageous to modify the properties of the biopolymers with a plasticizer.[0004]Plastici...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C08G63/16C08G63/85C08L27/06C08L67/03C08L67/04C08K5/00C08J3/18
CPCC08L27/06C08G63/16C08G63/85C08L67/04C08K5/0016C08L67/03C08J3/18C08L2205/02C08F2500/17C08F2500/01C08G63/78C08L67/02C08L2205/025
Inventor JOHNSON, ADAMARNOLD, RACHELLEVAN TRUMP, PHILLIP
Owner DANIMER IPCO LLC
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